FMF Racing 4.1 Complete System w/Carbon Cap Megabomb Header

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

This Part Fits:

Year	Make	Model	Submodel
2009-2020	Yamaha	YFZ450R	Base
2010-2011	Yamaha	YFZ450X	Base